11111110112401 has 4 divisors (see below), whose sum is σ = 11965810890292. Its totient is φ = 10256409334512.

The previous prime is 11111110112363. The next prime is 11111110112407. The reversal of 11111110112401 is 10421101111111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6022724607376 + 5088385505025 = 2454124^2 + 2255745^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111110112401 - 2⁹ = 11111110111889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111110112407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427350388926 + ... + 427350388951.

It is an arithmetic number, because the mean of its divisors is an integer number (2991452722573).

Almost surely, 2^{11111110112401} is an apocalyptic number.

It is an amenable number.

11111110112401 is a deficient number, since it is larger than the sum of its proper divisors (854700777891).

11111110112401 is an equidigital number, since it uses as much as digits as its factorization.

11111110112401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854700777890.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11111110112401 its reverse (10421101111111), we get a palindrome (21532211223512).

The spelling of 11111110112401 in words is "eleven trillion, one hundred eleven billion, one hundred ten million, one hundred twelve thousand, four hundred one".